When I started the game (in March? I think) I decided to go with a 'future WHM'. So when in Sastasha I had some gear, but ofc mostly grey. Tank went for bigger pulls and then started complaining about my heals numbers even after my bf explained that we were new (he was returning) and that I wasn't a lvl 45 WHM with full high level gear, and the tank kept complaining about the numbers when I casted my cure :l.
Surely it was an awful first dungeon experience and it repeated again a couple months ago when I started to tank and a high lvl healer decided that my pulls weren't big enough, bringing more mobs even when I had NO TP (Marauder/Sastasha) and complaining why I didn't take aggro.

The list of things you may find is enormous, that's why there's this topic around:
http://forum.square-enix.com/ffxiv/t...ry.-Let-s-vent.